1、專題08指數(shù)與指數(shù)函數(shù)最新考綱1.了解指數(shù)函數(shù)模型的實(shí)際背景2.理解有理數(shù)指數(shù)冪的含義,了解實(shí)數(shù)指數(shù)冪的意義,掌握冪的運(yùn)算3.理解指數(shù)函數(shù)的概念及其單調(diào)性,掌握指數(shù)函數(shù)圖象通過(guò)的特殊點(diǎn),會(huì)畫底數(shù)為2,3,10,的指數(shù)函數(shù)的圖象4.體會(huì)指數(shù)函。

2、課下層級(jí)訓(xùn)練十二對(duì)數(shù)與對(duì)數(shù)函數(shù)A級(jí)基礎(chǔ)強(qiáng)化訓(xùn)練1若函數(shù)yfx是函數(shù)yaxa0,且a1的反函數(shù),且f21,則fxAlog2xBClogx D2x2答案A由題意知fxlogaxa0,且a1,f21,loga21,a2.fxlog2x.22019。

3、專題09 對(duì)數(shù)與對(duì)數(shù)函數(shù)一知識(shí)精講1.對(duì)數(shù)的概念如果axNa0,且a1,那么x叫做以a為底N的對(duì)數(shù),記作xlogaN,其中a叫做對(duì)數(shù)的底數(shù),N叫做真數(shù).2.對(duì)數(shù)的性質(zhì)換底公式與運(yùn)算性質(zhì)1對(duì)數(shù)的性質(zhì):alogaNN;logaabba0,且a1。